Buffing or polishing wheel.



W. A. PAINTER.

BUPFING OR POLISHING WHEEL. APPLICATION FILED NOV. 12,1908.

I 1,106,833. Patented Ang.11,1914.

2 SHEETS-SHEET 1.

W. A. PAINTER. BUFPING 0R POLISHING WHEEL. APPLICATION FILED NOV. 12, 190s.

1 ,1 06,833. Patented Aug. 11, 1914.

i 4 2 EHEETS-SHEET 2. F .Z 'yfi.

5' f 22 Q 32 f a J g 5 UNITED sTATEs I wrmuu a. mm-ran, or rrrrssunen, Pmmvim. new or ommr :r'o PATRICK H- BEBGIN, 0F PITTSBURGH, l

sorrmeon' romsnmo Specification of Letters Patent- Application filed November 1 900. sum 10. 401,904,

To all whom it may concern.

Be it known that I, Wmnmm' A. PAINTER, of Pittsburgh, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Bufiing or Polishin In the accompanying drawings, which illustrate applications of my invention, Figure 1, is a plan view of one half of a section of folded bufling or polishing; material constituting the peripheral portion or rim of the wheel; Fig. 2, a view similar to Fig.

1, showing the pieces comprising a sectionv of slightly different form Fig. 3, a central vertical sectional view of a wheel embodying my invention mounted on a spindle;

Figs. 4:, 5, and 6 detail elevational views of portions of the plates or. disks comprising the wheel-center; Figs. 7, 8, and 9 central vertical sectional views of modified forms .of wheels embodying my invention mounted on spindles; Fig. 10 a perspective View of one of the plate-members or disks employed in the form of Fig. 7; and Figs. 11, 12, 13, 14 and 15, detail views of plates or disks particularly showing various forms of spurs, points or projections designed to engage the sections of the buffing or polishing material of the wheel.

My invention relates to that class of bufling or polishing wheels especially designed for bufling or polishing metals, and, as here tofore constructed, have usually comprised a number of cloth sections, of circular form made with a small central opening to permit the sebtions to be assembled on a spin-' ing-plates.

In the use of wheels of the class to which my invention relates, that is to say, wheels for buffing or polishing metals, and of the form above referred to, the wheels or the cloth sections thereof soon wear' away and after their diameters have been reduced to SIX or seven inches, the sections are usually' discarded. Thus under the present method of making and using these wheels there re-' mains a central portion of from six to seven inches that cannotbe used and in practice is usually thrown away.

wheel by jpolishing material Wheels, of which the following is a spec cation.

of cloth or other suitable materia; wheels constructed in accordance with my invention,

is to provide In the forino Fig.3,

An object of my. invention is to rovide a which'this greatwaste of 'ufling or 0 may be overcome. I'accomplish this end by roviding a wheel having a metallic whee center and a rim or peripheral portion of bufiing orpolishing or more rin -sections -With material made of one the butting or polishingmiaterial may be used until it isv worn down'to within a very short distance from themetallic. wheel-center, thus leaving only a thin collar or rim of bufiing material to be discarded. A further ob ect of the present invention .new and improved means for mounting ring-sections of bufli'ng or polish mgamaterial on a spindle. 1 r

-e'ferr1ng to the drawings, the bufiing or pollshmg portion of my wheel preferably comprises a number of ring-section's 1. These sections are formed by superimposing folded pieces 2 on one another as particularly shown by Figs. .1- and 2. Sections 1, when assembled constitute the rimor .-'pe-. riphery of the wheel. 1 1

The wheel-center, which is shown in Fig: 3, mounted on a spindle or shaft 3 of a .buif-. ing or polishing lathe, between circular clamping plates f1, comprises two outer platesor disks 5, a central key-plate ordisk 6, and.

intermediate disks or plates 7. As Shown in the form of Fig, in the detail view plates 5 is formed with a entral cupped opening 8, centering lugs or keys 9, and with projections or spurs or points 10.

The intermediate plates .7, in addition to being provided with a central opening '11, similar to the opening 8 of plates 5, penetrating projections 12 and centering lugs or keys 13,. are each formed with openings 14,

15. The penetrating projections 12 are ar ranged on both faces of the intermediate plates, and are adapted when the parts are assembled to engage two adjacent ring-sections 1. The central key-plate or-disk 6 is formed with projections 16 and with a series of keys or. .111 receivi 1openings 17.

show six ringsections each held between the plates or disks constituting the wheel-center andwith the spurs or points of the plates penetrating or gripping the ring-sections. By pro- 3, and more particularly.

4, each of the outer alternatingwith the lugs 13-,- and openings riding gripping prolections. in the form of spurs, points or tect adapted to enter the material of the ring-sections for the purpose of maintaining said sections in place, I am enabled to greatly reduce the amount of a ping or holding gripping or holding surface heretofore requiI' d or holding the bufiing or polishing material in place, consequently more of said material is exposed outside of the wheeltt-ntcr and may be utilized for bufling or polishing. A further advantage I derive by this construction, over constructions having disks or plates formed with flat or nonpenetrating holding or gripping members for the bufiing material is, that I do not depend upon the compression of the plates or disks alone for maintaining the gripping portions in contact with the bufling material as is the case where non-penetrating gripmembers are employed. These spurs, points or penetrating-projections may be formed from the material of the plates or disks and on their outer edges or periphery as shown by Figs. 14 and 15, or they may be arranged as illustrated by Figs. 11, 12 and 13; or the penetrating projections may be formed separately, or the plates or disks suitably secured thereto.

Fig. 10, shows a construction employing seplarlitte penetrating-projections inserted in a is In an assembled wheel of the form of Fig. 3, the guide or centering lugs 9 of the respective outer disks 5 project into the openings of the adjacent intermediate disks 7 and rest upon the centering lugs 13 thereof, and the lugs 13 of the first intermediate disks project through the openings 15 of the second intermediate disks and rest on the corresponding lugs of said second intermediate disks. The lugs 13 of the second intermediate disksproject through the openings 17. of the central disk 6. A wheel of this form may be readily assembled by first placing a ring-section 1 on an outer disk, then alternately placing the disks and ring-sections on each other. When thus assembled the wheel is mounted on a spindle and its center compressed by means of a nut 20.

In the form of Fig. 7 I dispense with the disks or plates 5, 6' and 7 and'provide the outer clamping-plates 4 with penetrating pins 21 and with centering means in the form of pins 22. In this form, the ringsections of the bufling or polishing material are formed with holes through which the pins 21 pass.

said

of a bufling or polishing wheel of the class described comprising a separable rim formed of ring-sections of bufiing or polishing material, and a wheel center formed of flexible interlockin sheet metal lates or disks with their perlpheries entere between the ring-sections, said plates formed with ring-gripping means, and means for centering the rings on the disks.

2. The combination with clamping plates, of a buffing or polishing wheel of the class described comprising a separable rim formed of ring-sections of buifing or polishing material, and a wheel center formed of sheet metal plates or disks having central cupped openlngs and ring-section grippingmeans, and means for centering the rings on the disks.

3. A butting or polishing wheel of the class described having its rim formed of ring-sections of bufiing or polishing material, and its center of a series of sheet metal disks comprising two outer disks provided with means for gripping the ring-sections, said disks provided with central cupped openings, intermediate interlocking disks, intermediate disks provided with means for gripping a ring-section, and means for centering the ring-sections on the disks. I

4. A bufiing or polishing wheel of th class described comprising a separable rim formed of ring-sections of bufiing or polishing material, and a wheel center including a series of sheet metal disks comprising two outer disks each .provided with gripping means, and intermediate disks having gripping means and centerin lugs.

In testimony whereof aflix my signature in presence of two witnesses.

A. C. WAY, W. G. Doonrrrnn. 

